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    <title>Document</title>
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        * {
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        .box {
            position: relative;
            width: 200px;
            height: 200px;
            margin: 100px auto;
            text-align: center;
            line-height: 200px;
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        #fu {
            position: absolute;
            top: 55px;
            right: 5px;
            background-color: #00ed7c;
            color: white;
            width: 75px;
            height: 26px;
            line-height: 26px;
            font-size: 16px;

        }

        #fu::after {
            content: '';
            position: absolute;
            right: 45px;
            color: red;
            display: block;
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            border: 3px solid transparent;
            border-top: 3px solid #00ed7c;
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<body>
    <div class="box">
        <p>极速问诊</p>
        <div id="fu">三甲/19 </div>
    </div>
</body>

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